ASTROSAT CZTI

Data Quality Report

Orbit 22418

Creation date: 2024-06-27T18:40:43.964951
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_007T03_9000003320_22418cztM0_level2.evt modeM0/AS1A07_007T03_9000003320_22418cztM0_level2_quad_clean.evt
Size (bytes)438,445,44097,459,200
Size418.1 MB 92.9 MB
Events in quadrant A3,001,890644,141
Events in quadrant B3,149,600647,693
Events in quadrant C3,057,813620,924
Events in quadrant D3,641,818600,285

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131262
B0134631
C0131641
D0149461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6281540.859736%
B6282510.811843%
C6282731.162050%
D62821602.546960%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7391 6281 0 0 0.00% 0.00%
B 7392 6283 5 5 0.07% 0.08%
C 7392 6282 0 0 0.00% 0.00%
D 7392 6283 120 120 1.62% 1.91%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 9016 53.61 777 762 154.0
A 0 226 6700 38.57 777 762 154.0
A 3 137 6311 36.04 777 762 154.0
B 0 190 54605 370.86 770 754 145.2
B 0 228 25984 173.75 770 754 145.2
B 3 64 18855 124.66 770 754 145.2
C 14 238 116980 659.8 749 756 176.1
C 1 16 15466 83.51 749 756 176.1
C 0 10 5897 29.19 749 756 176.1
D 1 52 556240 3038.07 754 734 182.8
D 13 249 122840 667.8 754 734 182.8
D 12 227 53404 288.05 754 734 182.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter